A million binaries from Gaia eDR3: sample selection and validation of Gaia parallax uncertainties

K El-Badry, HW Rix, TM Heintz - Monthly Notices of the Royal …, 2021 - academic.oup.com
We construct from Gaia eDR3 an extensive catalogue of spatially resolved binary stars
within≈ 1 kpc of the Sun, with projected separations ranging from a few au to 1 pc. We …

Completeness of the Gaia verse II: what are the odds that a star is missing from Gaia DR2?

D Boubert, A Everall - Monthly Notices of the Royal Astronomical …, 2020 - academic.oup.com
The second data release of the Gaia mission contained astrometry and photometry for an
incredible 1692 919 135 sources, but how many sources did Gaia miss and where do they …

The SUPERWIDE Catalog: A Catalog of 99,203 Wide Binaries Found in Gaia and Supplemented by the SUPERBLINK High Proper Motion Catalog

ZD Hartman, S Lépine - The Astrophysical Journal Supplement …, 2020 - iopscience.iop.org
We present a catalog of 99,203 wide binary systems, initially identified as common proper
motion (CPM) pairs from a subset of∼ 5.2 million stars with proper motions $\mu\gt …

New stellar encounters discovered in the second Gaia data release

CAL Bailer-Jones, J Rybizki, R Andrae… - Astronomy & …, 2018 - aanda.org
Passing stars may play an important role in the evolution of our solar system. We search for
close stellar encounters to the Sun among all 7.2 million stars in Gaia DR2 that have six …

Astrometric identification of nearby binary stars–I. Predicted astrometric signals

Z Penoyre, V Belokurov… - Monthly Notices of the …, 2022 - academic.oup.com
We examine the capacity to identify binary systems from astrometric errors and deviations
alone. Until the release of the fourth Gaia data release, we lack the full astrometric time …

Distances and parallax bias in Gaia DR2

R Schönrich, P McMillan, L Eyer - Monthly Notices of the Royal …, 2019 - academic.oup.com
We derive Bayesian distances for all stars in the radial velocity sample of Gaia DR2, and use
the statistical method of Schönrich, Binney & Asplund to validate the distances and test the …

Astrometric identification of nearby binary stars – II. Astrometric binaries in the Gaia Catalogue of Nearby Stars

Z Penoyre, V Belokurov… - Monthly Notices of the …, 2022 - academic.oup.com
We examine the capacity to identify binary systems from astrometric deviations alone. We
apply our analysis to the Gaia eDR3 and DR2 data, specifically the Gaia Catalogue of …

[HTML][HTML] Gaia data release 2-using gaia parallaxes

X Luri, AGA Brown, LM Sarro, F Arenou… - Astronomy & …, 2018 - aanda.org
Context. The second Gaia data release (Gaia DR2) provides precise five-parameter
astrometric data (positions, proper motions, and parallaxes) for an unprecedented number of …

A classifier for spurious astrometric solutions in Gaia eDR3

J Rybizki, GM Green, HW Rix, K El-Badry… - Monthly Notices of …, 2022 - academic.oup.com
ABSTRACT The Gaia early Data Release 3 has delivered exquisite astrometric data for 1.47
billion sources, which is revolutionizing many fields in astronomy. For a small fraction of …

The Gaia DR2 parallax zero-point: hierarchical modelling of red clump stars

VC Chan, J Bovy - Monthly Notices of the Royal Astronomical …, 2020 - academic.oup.com
The systematic offset of Gaia parallaxes has been widely reported with Gaia's second data
release, and it is expected to persist in future Gaia data. In order to use Gaia parallaxes to …